Saint Georges de l'Oyapock Wastewater Treatment Plant, Saint-Georges, French Guiana

The Saint Georges de l'Oyapock wastewater treatment plant is located in the town of Saint-Georges, in the French overseas department of Guyane, French Guiana. This facility serves a population of approximately 680 residents, providing essential sanitation infrastructure for this small community near the border with Brazil. The plant operates with secondary treatment, which is the standard level required under French and EU regulations for agglomerations of this size. The designed capacity of 2000 m³/day indicates the plant is sized to accommodate future growth, while current discharge volume is 121.31 m³/day. As a French territory, the plant falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for all discharges from agglomerations above 2000 population equivalent. The treated effluent is discharged into local waterways that ultimately drain into the Atlantic Ocean. The plant's location within 50 km of the coast means its discharge can influence coastal water quality. The surrounding region is ecologically sensitive, with tropical rainforest and diverse aquatic habitats that depend on proper wastewater management to prevent nutrient enrichment and protect biodiversity.

The plant discharges into small streams that flow into the Oyapock River, which forms the border between French Guiana and Brazil. The Oyapock River empties into the Atlantic Ocean near the mouth of the Amazon River system. This coastal zone supports mangrove forests and estuarine habitats that are critical for fish spawning and migratory bird species. Proper treatment helps prevent nutrient loading and pathogen contamination in these sensitive waters.